Neco 2025 Biology Question 11
Practice objective / multiple choice question 11 from the 2025 Neco Biology examination.
A batch culture of a bacterium is monitored by measuring optical density at 600 nm (\\(\\text{OD}_{600}\\)). At time 0 min the \\ (\\text{OD}_{600}\\) is 0.05, at 80 min it is 0.20 and at 120 min it is 0.80. Assuming exponential growth between 80 min and 120 min, calculate the generation time (in minutes). The bacterium is Gram‑negative, rod‑shaped, facultative anaerobe, oxidase negative and ferments lactose with gas production. Based on these characteristics, state the most likely genus.
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About This Question
This is Neco 2025 Biology Question 11. It is one of the objective questions from the 2025 Neco Biology examination.
Difficulty level: Hard .
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